<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>admin</title>
    <style type="text/css">
        .header{
            background: #324858 none repeat scroll 0 0;
            height: 50px;
        }
        .sidebar{
            background: #eeeef1 none repeat scroll 0 0;
            width: 150px;
        }
        .content{
            position: relative;
            top: 50px;
            left: 150px;
            background-color: #00FF00;
        }
    </style>
</head>
<body>
<div class="header">
    头部
</div>
<div class="sidebar">
    左侧菜单栏
    左侧菜单栏
    左侧菜单栏
    左侧菜单栏
    左侧菜单栏
    左侧菜单栏
    左侧菜单栏
</div>
<div class="content">
    正文
</div>
</body>
</html>